When you arrive to the venue, you will be asked to tell your name (and maybe your name nickname) to get your pass for the event.

Before your run:
If you play PC make sure to install (and download) your game(s) as soon as possible to test it out to make sure everything works. If you use your own keyboard / mouse / controller, make also sure that they work too.
For console runners, check that you have all your cables ready and controllers have enough battery.